To the best of my knowledge, these models were given to my Dad and Uncle, by the 566th Military-Transport Aviation Regiment of the Soviet Air Force, with whom they were deployed on the Antonov An-12 during flight training for the Indian Air Force; at the Sescha Air Base, Seschinskaya, Bryansk Oblast, circa 1961.

The first one appears to be a Sukhoi Su-7. I was looking to find out more about the second. My first guess was the Lavochkin La-250 Anaconda, but that had delta wings.

I am unaware about the manufacturer of either model. They are in pretty rough shape now, being over 55 years old. Any info about their origins would be welcome.

I was looking to find out more about the second. My first guess was the Lavochkin La-250 Anaconda, but that had delta wings.

Both are very poor reproductions, and poor scale replicas. Your second guess was a good one (without the delta wings.) I tried a Tu-128P Fiddler, but the wing shape, and the general engine and body shape are a bit different, along with the missing Tupolev canoe fairings for the wheels. This may look a bit like a Yakovlev interceptor, such as the Yak-27 Flashlight, but the engines were slung on the wings. Hmm...
Cheers, Sumantra.